Question

Which option correctly gives the dimensional formula of thermal resistance R_T​ for heat conduction?

Options

• M⁰L⁰T⁰K¹

• M⁻¹L⁻¹T³K¹

• M¹L²T⁻³K⁻¹

• M⁻¹L⁻²T³K¹

Answer 1

M⁻¹L⁻¹T³K¹

Explanation:

Since RT = ΔT/P and power has dimension ML²T⁻³, the resulting dimension is M⁻¹L⁻²T³K.